import logging

from flask import render_template, current_app, session, request, jsonify, g
from sqlalchemy.sql.functions import user

from info import redis_store, constants
from info.models import User, News, Category
from info.utils.common import user_login_data
from info.utils.response_code import RET
from . import index_blu


@index_blu.route('/news_list')
def get_news_list():
    """获取指定的分类的新闻列表"""
    # 1.获取参数
    args_dict = request.args
    page = args_dict.get('page', '1')
    per_page = args_dict.get('per_page', constants.HOME_PAGE_MAX_NEWS)
    category_id = args_dict.get('cid', '1')
    # 2.校验参数
    try:
        page = int(page)
        per_page = int(per_page)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')
    # 3.查询数据并分页
    filters = [News.status == 0]
    # 如果分类id不为0，那么添加分类id的过滤
    if category_id != '1':
        filters.append(News.category_id == category_id)
    try:

        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, per_page, False)
        # 获取查询出来的数据
        items = paginate.items
        # 获取到总页数
        total_page = paginate.pages
        current_page = paginate.page
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='数据查询失败')
    news_li = []
    for news in items:
        news_li.append(news.to_basic_dict())

    data = {
        "news_li": news_li,
        "total_page": total_page,
        "current_page": current_page
    }
    # 4.返回数据
    return jsonify(errno=RET.OK, errmsg="ok", data=data)


@index_blu.route("/")
@user_login_data
def index1():
    # session['name'] = 'itheima'

    # 测试打印日志
    # logging.debug("This is a debug log.")
    # logging.info("This is a info log.")
    # logging.warning("This is a warning log.")
    # logging.error("This is a error log.")
    # logging.critical("This is a critical log.")
    # redis_store.set('name','itheima')

    user = g.user

    # 获取点击排行数据

    news_list = None
    try:
        news_list = News.query.order_by(News.clicks.desc()).limit(constants.CLICK_RANK_MAX_NEWS)
    except Exception as e:
        current_app.logger.error(e)

    click_news_list = []
    for news in news_list if news_list else []:
        click_news_list.append(news.to_basic_dict())

    # 获取新闻分类依据
    categories = Category.query.all()
    # 定义列表保存分类依据
    categories_dicts = []
    for category in categories:
        # 拼接内容
        categories_dicts.append(category.to_dict())
    data = {
        'user_info': user.to_dict() if user else None,
        'click_news_list': click_news_list,
        'categories': categories_dicts
    }
    return render_template('news/index.html', data=data)
    # return render_template('news/index.html')


@index_blu.route('/favicon.ico')
def favicon():
    return current_app.send_static_file('news/favicon.ico')
